mirror of
https://github.com/tiagovignatti/intel-gpu-tools.git
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121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
/*
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* Copyright © 2008 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <pciaccess.h>
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#include <unistd.h>
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#include "intel_gpu_tools.h"
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#define INGTT(offset) (*(volatile uint32_t *)(gtt + (offset) / (KB(4) / 4)))
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#define KB(x) ((x) * 1024)
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#define MB(x) ((x) * 1024 * 1024)
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int main(int argc, char **argv)
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{
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struct pci_device *pci_dev;
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int start, aper_size;
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unsigned char *gtt;
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uint32_t devid;
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pci_dev = intel_get_pci_device();
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devid = pci_dev->device_id;
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intel_get_mmio(pci_dev);
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if (IS_GEN2(devid)) {
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printf("Unsupported chipset for gtt dumper\n");
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exit(1);
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}
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if (IS_G4X(devid) || IS_GEN5(devid))
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gtt = ((unsigned char *)mmio + MB(2));
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else if (IS_965(devid))
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gtt = ((unsigned char *)mmio + KB(512));
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else {
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/* 915/945 chips has GTT range in bar 3 */
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int err;
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err = pci_device_map_range(pci_dev,
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pci_dev->regions[3].base_addr,
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pci_dev->regions[3].size,
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PCI_DEV_MAP_FLAG_WRITABLE,
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(void **)>t);
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if (err != 0) {
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fprintf(stderr, "mapping GTT bar failed\n");
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exit(1);
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}
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}
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aper_size = pci_dev->regions[2].size;
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for (start = 0; start < aper_size; start += KB(4)) {
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uint32_t start_pte = INGTT(start);
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uint32_t end;
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int constant_length = 0;
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int linear_length = 0;
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/* Check if it's a linear sequence */
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for (end = start + KB(4); end < aper_size; end += KB(4)) {
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uint32_t end_pte = INGTT(end);
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if (end_pte == start_pte + (end - start))
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linear_length++;
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else
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break;
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}
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if (linear_length > 0) {
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printf("0x%08x - 0x%08x: linear from "
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"0x%08x to 0x%08x\n",
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start, end - KB(4),
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start_pte, start_pte + (end - start) - KB(4));
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start = end - KB(4);
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continue;
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}
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/* Check if it's a constant sequence */
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for (end = start + KB(4); end < aper_size; end += KB(4)) {
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uint32_t end_pte = INGTT(end);
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if (end_pte == start_pte)
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constant_length++;
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else
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break;
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}
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if (constant_length > 0) {
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printf("0x%08x - 0x%08x: constant 0x%08x\n",
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start, end - KB(4), start_pte);
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start = end - KB(4);
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continue;
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}
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printf("0x%08x: 0x%08x\n", start, start_pte);
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}
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return 0;
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}
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